Segmented Embolic Material Delivery via Rotating Inner Catheter
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Solution Overview
Problem
Current embolic material delivery systems lack the ability to precisely control the amount of embolic material delivered to a target site, often resulting in overfilling or underfilling due to the availability of materials in predetermined lengths.
Innovation Solution
The design of an embolic material delivery system that includes an outer and inner catheter with lumens, where the embolic material is advanced through a rotation mechanism and anchored by a coil or anchor, allowing for controlled deployment and cutting of the material to the desired length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If embolic material is delivered in predetermined lengths, then the delivery system is simple to manufacture and operate, but the precision of embolization control is poor resulting in overfilling or underfilling
Solution Approach 1:
The embolic material is divided into multiple segments or coils that can be independently controlled and deployed. The delivery system includes multiple lumens allowing selective release of individual segments, enabling precise control over the total length and volume of embolic material delivered to the target site.
Solution Approach 2:
The delivery system incorporates dynamic control mechanisms including rotation of the inner catheter to advance embolic material, and the ability to selectively release segments at different positions. This dynamic control allows the system to adapt the delivered material length to match the actual needs of the target site, eliminating overfilling or underfilling.
2Adaptability or versatility
If the embolic material length is fixed in the delivery device, then the device structure is simple, but the adaptability to different target sites is limited
Solution Approach 1:
The embolic material is segmented into multiple controllable portions that can be selectively deployed at different positions along the delivery catheter. This segmentation allows the system to deliver customized lengths of embolic material to match various target site requirements, significantly improving adaptability while maintaining a relatively simple overall device structure.
Solution Approach 2:
The embolic material is pre-loaded into the delivery system in a compressed or contained state within the lumens. The system is designed to release this pre-loaded material at the target site through controlled mechanisms, allowing for rapid deployment of the appropriate length without complex real-time measurement or adjustment procedures.
Data Source
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AI summary
Embolic material delivery devices and methods of using them are disclosed. An example embolic material delivery assembly includes an outer member having a lumen extending therein and a distal end region, an inner member disposed within the lumen of the outer member, wherein the inner member includes a first lumen extending therein. The embolic material delivery assembly also includes a first embolic material extending within the first lumen of the inner member, the embolic material having a first distal end region. The embolic material delivery assembly also includes an anchor disposed within the lumen of the outer member, the anchor having a first attachment region. Further, the first distal end region of the first embolic material is coupled to the first attachment region of the anchor.